Floor-hinge.



PATENTED OCT. 17, 1905.

W M POTTER FLOOR HINGE.

APPLICATION FILED 00w. 9. 1902.

ITF SS PTI-LNT OFFICE.

WILLIAM M. POTTER, OF SYRACUSE, NEW YORK, ASSIGNOR TO E. C.

STEARNS & CO, OF SYRACUSE, NEW YORK.

FLOORHllNGllE-n Specification of Letters Patent.

Patented Oct. 1'7, 1905.

Application filed October 9, 1902. Serial No. 126,541.

To all 1071/0112. it may concern:

Be it known that I, WILLIAM M. Porruu, a citizen of the United States,residing at Syracuse, in the county of Onondaga and State of New York,have invented certain new and useful Improvements in'l loor-I-Iinges;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to floor-hinges, and has for its object to producea double-acting floor-hinge of strong, simple, and economicalconstruction and eliective operation; and it consists in the arrangementof parts and details of construction herein described.

In the drawings herewith, Figure I is a side elevation of a door fittedwith my hinge. Figs. 11 and III are respectively side elevation and topplan of my hinge. Figs. IV and V are vertical sections showing the partsin dill'erent positions. Fig. VI is across-section on line VI of Fig.IV. Fig. VII is an enlarged elevation of the sliding block and rollerdetached.

In the figures, 1 indicates the door hung on top hinge 2 and provided atthe bottom with hearing 3, engaging with squared head l of hinge-pin 5of the floor-hinge, fitted to suitable cavity in base-board or floor 6.The hinge consists of cylindrical shell 8, of cast metal or othersuitable material, provided with integral socket 9, fitted withball-bearing for lower end of pin 5, having shoulder 11 near upper endfitting upper socket 13 on cap-plate 14:, secured to flange on upper endof shell by suitable screws. With integral cam 15 on the pin, havingcorresponding inclination on both sides, engages antifriction roller 16,journaled in sliding block 17. cut out on each side to fit guides 18 andcarrying on its upper cylindrical end 19 the spiral spring 21, engagingwith the shouldered collar 22, adjusted by screw 23, having its threadedshank 24 fitted to the collar and its shoulder 25 engaging with theupper surface thereof. That the tension of the spring may be easilyadjusted the screw head extends upwardly through the cap-plate and thefinishing-plate 27. At lower point of cam is preferably formed pocket 28for the roller, and the shell may be more or less filled with oil, asshown, for permanent lubrication.

The operation of my spring is best underpressing the spring.

stood from Figs. IV and V. In the former the parts are in the closedposition of the door. As it is opened in either direction the cam isrotated by the door and forces the roller to ride up its incline ineither direction toward its highest point, as shown in Fig. V, com- Whenthe door is released, the pressure of the spring forces the roller downthe incline, returning the door to closed position.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a 'l'loorehinge, the combination with the door, of a shell fittedto a cavity in the floor below the door, a vertical hinge-pin journaledin the shell having its upper end in engagement with the door, aball-bearing arranged in the bottom of the shell, a cap plate secured tothe top of the shell, an integral cam surrounding the hinge-pin havingits low point and its high. point oppositely arranged, and similarinclinations 011 both sides, a sliding block fitted to guides in theshell, a projection on the block to engage with the cam, a collararranged above the block, an adjusting-screw engaging with the saidcollar, and a spring arranged between the block and the collar.

2. In a lloorhinge, the combination with the door, of a shell fitted toa cavity in the lloor below the door, a cap-plate secured to the top ofthe shell, and a finishing-plate fitted over said cap-plate, a hinge-pinjournaled in. the shell and engaging with the bottom of the door, anintegral cam surrounding the pin, a sliding block fitted to integralguides in the shell having an antilrictionroller engaging with the cam,a collar arranged above the block, an adjusting-screw engaging withsaid, collar and having an upwardly-cxtending head, and a spiral springarranged between the block and the collar.

3. In a floor-hinge, the combination with the door, of a cylindricalshell arranged below the door in a suitable cavity, a ball-bearingarranged in the bottom oi the shell, a cap-plate secured to the top ofthe shell, a vertical hinge-pin journaled between the ball-bearing andthe cap-plate and llZtVlIlg an angular head rupwardly extending throughthe cap-plate in engagement with the door, an integral cam surroundingthe lower end of the hinge-pin and having similar inclinations on bothsides between its opposite high i bottom of the door, an integral canisurand low points, Vertical guides in the shell, a sliding block fittedto slide in said guides, an antifriction-roller on said block engagingwith the cam, a collar arranged above the block, an adj Listing-screwengaging with the said collar and having an upwardly-extending head, anda spiral spring arranged between the block and the collar.

4. In a floor-hinge, the combination with the door suitably supported,of a cylindrical shell arranged in a cavity in the floor beneath thedoor, a socket in the bottom of the shell, a ball-bearing arranged insaid socket, a capplate secured to the top of the shell, a. corresponding socket in the under surface of the guide-plate, afinishing-plate fitted over the cap-plate, a Vertical hinge-pinjournaled in the ball-bearing and the upper socket and having an angularhead upwardly extending through both plates in engagement with therounding the lower end of the hinge-pin and having similar inclinationson both sides between its opposite high and low points, and a suitableroller-pocket at its low point, of ver tical guides in the interior ofthe shell, a sliding block fitted to said guides, an antifriction-rollerarranged on said block to engage with the cam, an adjusting-screw havingan integral shoulder and a head upwardly extending through the plates, ashouldered collar supported on said adjusting-screw be neath theshoulder, and a. spiral spring adjustably maintained between the slidingblock and the collar.

In testimony whereof I affix my signature in presence of two witnesses.

' WILLIAM M. POTTER. Witnesses:

O. G. ScHoENEoK, M. B. SMITH.

